EP0557994A1 - Dispositif pour la production d'eau chaude à économie d'énergie - Google Patents

Dispositif pour la production d'eau chaude à économie d'énergie Download PDF

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Publication number
EP0557994A1
EP0557994A1 EP93102963A EP93102963A EP0557994A1 EP 0557994 A1 EP0557994 A1 EP 0557994A1 EP 93102963 A EP93102963 A EP 93102963A EP 93102963 A EP93102963 A EP 93102963A EP 0557994 A1 EP0557994 A1 EP 0557994A1
Authority
EP
European Patent Office
Prior art keywords
hot water
tank
water
circulation
store
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93102963A
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German (de)
English (en)
Other versions
EP0557994B1 (fr
Inventor
Friedrich Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MUELLER, FRIEDRICH
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP0557994A1 publication Critical patent/EP0557994A1/fr
Application granted granted Critical
Publication of EP0557994B1 publication Critical patent/EP0557994B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F28D20/0039—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material with stratification of the heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0078—Heat exchanger arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0082—Multiple tanks arrangements, e.g. adjacent tanks, tank in tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0086—Partitions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to a device for energy-saving hot water supply.
  • a generic device has at least one hot water tank. With the inclusion of the output line of the hot water tank, a hot water circuit is set up, which circulates through another tank. This storage tank is regularly smaller than the hot water storage tank and is normally operated at a lower temperature than this.
  • Such a device for energy-saving hot water supply with a hot water tank is known from DE-PS 34 03 859, in which a water circuit is provided with the inclusion of the outlet line of the hot water tank and a further tank.
  • This device for hot water supply is intended to largely avoid destruction of the temperature stratification in the hot water tank.
  • certain measures are proposed through which water of a significantly lower temperature than the maximum temperature in the hot water tank is returned to the hot water tank in such a way that the temperature stratification of the water is not impaired.
  • this device for energy-saving hot water supply has a circulation store, which is spatially performs two functions separately from the hot water tank.
  • this storage tank serves to store heat from the water in the circuit and to maintain a water circulation in the lines to the consumers, which means that relatively warm water is immediately available to the consumers when they are actuated.
  • this storage tank feeds colder water to the hot water tank, whereby in return it receives warmer water from the hot water storage tank.
  • a hot water supply system is known in which a "circulation storage" is provided.
  • the circuit in which the water is kept at a lower temperature than the maximum temperature in the boiler is not designed so that it essentially contains the outlet line of the hot water boiler.
  • the circuit kept at a lower temperature is completely separate from the circuit of the hot water boiler.
  • a boiler has the task of performing the hot water circulation in an energy-saving manner.
  • CH-PS 535 401 describes a system similar to the prior art dealt with above, namely a hot water storage tank (also known as a hot water storage tank) which is integrated in a larger buffer storage tank.
  • the buffer store is not heated by a solid fuel boiler, but by an external flow heater that transports hot liquid into a vessel located on the lower side of the buffer store, which then ultimately heats up the buffer store.
  • the useful water tank (shower water etc.) is heated via the buffer tank.
  • the object of the present invention is to provide a device for energy-saving hot water supply while eliminating the problems described, in which a continuous hot water supply is ensured even in the most varied of starting situations with the least possible energy loss.
  • the further memory according to the invention can have any shape, for example a spherical shape, shell shape or the like. It can extend over the entire diameter of the reservoir or only a fraction of it.
  • the height at which the storage tank is installed in the hot water storage tank can also be any. It can be fixed, e.g. welded on or also introduced later and e.g. just be screwed on.
  • It can consist of a continuous pipe, e.g. from the upper cover to the lower cover of the hot water tank with a respective inlet and outlet at these points.
  • the material of the further memory can be made of metal or plastic or, in a special case, of rubber.
  • a particular advantage of a preferred embodiment with a circulation buffer made of rubber is that in this case the additional storage can also be retrofitted in a particularly simple manner without it having to be dismantled, e.g. of the boiler.
  • this can first be introduced into the hot water storage tank in a compressed or evacuated, shrunk form through a flange hole (hand hole) and then brought back to its normal shape.
  • the content of the additional tank should be large enough to correspond to the total volume of the hot water and circulation pipes in a house.
  • Another advantage of the memory according to the invention is that it does not have to be isolated as in the prior art. In particular, no additional pipe connections that would result in additional cooling losses are required between the further store and the hot water store. Furthermore, the solution according to the invention enables a reduction in the number of fittings, non-return valves, thermostats and connections of the hot water tanks and other tanks.
  • the device for hot water supply according to the invention also ensures that the temperature stratification in the hot water tank is largely retained.
  • the device has means which enable a further hot water circuit between the hot water tank and the further tank.
  • This form of heat exchange is far more efficient than that of prior art devices. In this case, there is no need for special exposed pipes, which can contribute to energy loss in the hot water circuit.
  • Another preferred embodiment has a separate heat source as a means of maintaining a certain temperature in the further store.
  • This can be, for example, an electric heating insert or a heat exchanger that is heated by an oil / gas / solid fuel boiler.
  • the invention also teaches the use of a hot water supply device which has a hot water tank and a further tank, a water circuit including an outlet line leading to at least one consumer of the hot water tank and the further tank and a device for heating the water being provided in the further tank, to combat legionella in particular in the outlet line of the hot water tank, it being provided that the water in the further tank is heated to a temperature for a predetermined period of time which is higher than that of the water in the hot water tank, and that the heated water by the circulation is circulated.
  • the legionella bacteria arising in the hot water pipes can thus be combated with simple means and in a very energy-saving manner, since only a relatively small amount of water is heated to a temperature where Legionella die off.
  • a separate heat source can be provided in the additional storage (which can also be referred to as a circulation buffer), which heats the water in the additional storage above the temperature of the water in the hot water storage.
  • the temperature of the water in the hot water tank can be 60 ° C.
  • a temperature of, for example, 70 to 80 ° C. can then be reached in the further store. At this high temperature, the water can circulate in the pipe network for a short time and thereby kill the Legionella in the pipe network. It is not necessary to heat the entire amount of water in the hot water tank to the temperature required to kill Legionella.
  • the additional storage does not necessarily have to be arranged in the hot water storage in this application.
  • a hot water boiler 1 is provided as the hot water tank, which is supplied with cold water via a line and which has an outlet line 4 which leads to a consumption point 5.
  • the water in the hot water boiler 1 is heated as required by means of measures known per se.
  • the hot water supply system is provided with a further store 2 and a pipe system in such a way that, with the inclusion of the outlet line 4, a water circuit can be guided back into the further store 2 via a feed pipe 7, a valve 12, the outlet pipe 4 and a return pipe 6.
  • This circuit does not include the hot water tank 1.
  • the additional tank or circulation tank 2 is arranged in the boiler 1 and separated from it by a partition plate 3.
  • the partition plate 3 Since the circulation tank 2 is operated at a lower temperature than the hot water tank 1 itself, the partition plate 3 is provided with a poorly heat-conducting material or is designed to be insulating. For this purpose, it is also possible to install a second partition at a short distance from the first partition and to insulate it immediately or subsequently in the space, for example with an insulating foam.
  • a water circuit is provided between the hot water tank 1 and the further tank 2.
  • This circuit is formed by the outlet line 4 of a pipe connection 8 and a part of the return pipe 6 and by means of the pipe 15 with a check valve, through which colder water reaches the hot water tank 1 from the further tank 2.
  • This further water circuit is controlled by a temperature sensor 14 which actuates a circulation pump 9.
  • This circulation pump should be a speed-controlled pump, so that the water flowing back through the pipe 15, the heat stratification in lower storage area of the hot water tank 1 is not destroyed.
  • Both the outlet pipe or hot water dispensing pipe 4 and the return pipe 6 can protrude upwards in the interior of the stores 1 and 2, respectively, in order to prevent gravity circulation of the hot water. However, this is not necessary for the functioning of the circulation buffer 2.
  • the return pipe 6 could, for example, also lead vertically out of the further store 2.
  • the device according to FIG. 1 now enables a particularly energy-saving hot water supply.
  • hot water When hot water is drawn from the tap 5, hot water initially flows via the outlet line 4 and the valve 12.
  • the supply pipe 7 is shut off via the valve 12.
  • the valve 12 opens the hot water circulation from the further store 2 via the feed pipe 7, the outlet pipe 4 and the return pipe 6.
  • a check valve 13 is provided for further securing the water circulation in the predetermined direction.
  • the operator of the device can now freely decide whether he wants to make use of this advantage by switching on the circulation pump 11.
  • This advantage is particularly effective when there are several lines with different tapping points. In this case, hotter water from one return line can mix with colder water from another return line in the circulation buffer. This leads to a faster drop in the temperature in the pipe system, so that overall heat losses are reduced.
  • the circulation pump 9, controlled by the temperature sensor 14, ensures that hot water from the hot water store 1 reaches the further store 2. At the same time, cooled circulation water flows back through the pipe 15 into the lower part of the hot water tank 1.
  • FIG. 2 now shows an alternative embodiment similar to that of FIG.
  • the water cycle between the hot water tank 1 and the further tank 2 is brought about solely by gravity.
  • the thermostatic valve 21 opens and enables the transport of hot water from the store 1 into the circulation store 2 via the outlet line 4, the pipe connection 8 and the return pipe 6.
  • a check valve 22 ensures that the water flow only in the direction of from the bottom to the top.
  • FIG. 3 shows an embodiment in which the heat exchange between the hot water tank 1 and the further tank 2 takes place by means of a gravity circulation via the pipes 31 and 30.
  • the exemplary embodiment according to FIG. 3 corresponds to that of FIG. 1 and corresponding components are provided with the same reference numerals.
  • the continuously operable circuit with a lower temperature leads from the further store 2 via the pump 11, the valve 12, the line 4, the line 6 and the valve 13 back to the further store 2.
  • hot water is supplied via the Line 4 and the 3-way valve 12 removed from the memory 1.
  • FIG. 4 shows a device in which the temperature in the further store 2 is maintained by an electric heating insert 40.
  • a heat exchanger can also be installed, which is heated by an oil / gas / solid fuel boiler.
  • a pipe connection from the hot water tank 1 to the circulation buffer 2 and back is not necessary.
  • a certain heat exchange between the hot water tank 1 and another tank 2 may also be desirable. This can be done, for example, by choosing suitable materials for the partition 3.
  • FIG. 5 shows a device according to the invention with the same functions as FIG. 1. The difference is that the further water circulation between hot water tank 1 and another tank 2 takes place via a completely separate pipe connection 51. In this embodiment, however, a circulation pump 52 and a temperature sensor 50 controlling it are also required.
  • FIG. 6 An embodiment is now shown in FIG. 6, in which the hot water tank completely surrounds the circulation tank 69.
  • the further memory 65 is here a separately inserted cylindrical container.
  • the output line is here at the top of the device.
  • the hot water circulation takes place by means of the circulation pump 58 via the feed pipe 62, the valve 63 and the return pipe 61 .
  • FIG. 7 shows a further embodiment of the device according to the invention, in which a hot water circuit is set up by gravity between the hot water tank 1 and the further tank 69.
  • a further pipe connection 70 between the hot water tank 1 and another tank 69 is provided.
  • This device also has a valve 71.
  • a pipe 68 with a check valve which projects from the circulation storage 69 into the hot water storage 1. Colder water can get into the hot water tank 1 through this pipe 68.
  • the "normal" hot water tap takes place via the line 72, the 3-way valve 63 and the consumer 5.
  • the circuit which can be continuously operated with hot water at a lower temperature is carried out via the pump 58, the valve 63, the line 61 and the check valve 67 .
  • a device with a heat exchanger 90 is shown schematically in FIG.
  • the energy-saving hot water circulation takes place here by means of the circulation pump 94 via the heat exchanger 90, the feed pipe 93, the outlet pipe 91 and the return pipe 92.
  • the circulation of the hot water circulation is carried out in the opposite direction.
  • warm water flows from the circulation buffer 2 via the flow pipe 107, the 3-way valve 112, part of the outlet line 104 and a connector 117 in the further memory 2 back.
  • the water circulation between the hot water storage tank 1 and the further storage tank takes place via the outlet line 104 ', the connecting pipe 108 and part of the connecting pipe 117.
  • Colder water can reach the hot water storage tank 1 from the circulation storage tank 2 through the pipe 115 with a check valve.
  • This construction has a particular advantage over the other constructions.
  • multi-family houses there are several main pipes and in each of these pipes a water meter is installed for one or more parties. If the water circulation were to work in the same circuit in which the hot water is drawn, the water meter for the different parties would also run during the circulation operation. This means that the water meter would indicate hot water consumption, although this was not necessarily the case. This disadvantage no longer exists in the present embodiment.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Sorption Type Refrigeration Machines (AREA)
EP93102963A 1992-02-27 1993-02-25 Dispositif pour la production d'eau chaude à économie d'énergie Expired - Lifetime EP0557994B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4206078A DE4206078A1 (de) 1992-02-27 1992-02-27 Vorrichtung zur energiesparenden warmwasserversorgung
DE4206078 1992-02-27

Publications (2)

Publication Number Publication Date
EP0557994A1 true EP0557994A1 (fr) 1993-09-01
EP0557994B1 EP0557994B1 (fr) 1997-09-10

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ID=6452744

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Application Number Title Priority Date Filing Date
EP93102963A Expired - Lifetime EP0557994B1 (fr) 1992-02-27 1993-02-25 Dispositif pour la production d'eau chaude à économie d'énergie

Country Status (3)

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EP (1) EP0557994B1 (fr)
AT (1) ATE158071T1 (fr)
DE (2) DE4206078A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321098A (en) * 1997-01-14 1998-07-15 Saxelby Roberts Eric Shower using main and supplementary electric heaters
NL1014612C2 (nl) 2000-03-10 2001-09-13 Leonardus Wouter Koot Opslagvatsamenstel voor warm water.
GB2367115A (en) * 2000-07-25 2002-03-27 Albion Water Heaters Ltd A supplementary tank connection arrangement for connecting to a water storage tank
CN103673295A (zh) * 2012-09-06 2014-03-26 珠海格力电器股份有限公司 直热式水箱加热水流路系统及其控制方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503991B1 (de) * 2006-07-17 2008-10-15 Vaillant Austria Gmbh Schichtenspeicher
DE102017104947A1 (de) 2017-03-09 2018-09-13 Oliver Kuhnt Umwälzanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH535410A (de) * 1972-03-22 1973-03-31 Willi Brandl Konstrukteur Speicher-Heizanlage an einem Gebäude
DE3403859C2 (fr) * 1984-02-03 1987-11-05 Friedrich 7180 Crailsheim De Mueller
WO1991008423A1 (fr) * 1989-11-25 1991-06-13 Ventank Products Limited Reservoir d'eau chaude cloisonne

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT384481B (de) * 1985-08-09 1987-11-25 Atzenhofer Werner Heizungsanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH535410A (de) * 1972-03-22 1973-03-31 Willi Brandl Konstrukteur Speicher-Heizanlage an einem Gebäude
DE3403859C2 (fr) * 1984-02-03 1987-11-05 Friedrich 7180 Crailsheim De Mueller
WO1991008423A1 (fr) * 1989-11-25 1991-06-13 Ventank Products Limited Reservoir d'eau chaude cloisonne

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE-C- 3 403 859 *
WO-A-91/08423 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321098A (en) * 1997-01-14 1998-07-15 Saxelby Roberts Eric Shower using main and supplementary electric heaters
NL1014612C2 (nl) 2000-03-10 2001-09-13 Leonardus Wouter Koot Opslagvatsamenstel voor warm water.
WO2001067001A1 (fr) * 2000-03-10 2001-09-13 Leonardus Wouter Koot Ensemble cuve de stockage pour eau chaude
GB2367115A (en) * 2000-07-25 2002-03-27 Albion Water Heaters Ltd A supplementary tank connection arrangement for connecting to a water storage tank
CN103673295A (zh) * 2012-09-06 2014-03-26 珠海格力电器股份有限公司 直热式水箱加热水流路系统及其控制方法

Also Published As

Publication number Publication date
ATE158071T1 (de) 1997-09-15
EP0557994B1 (fr) 1997-09-10
DE4206078A1 (de) 1993-09-02
DE59307294D1 (de) 1997-10-16

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